Re: Deform a chain

I wasn't able to reproduce your result, but I did (eventually) get an "UPDATE/DELETE has gone through too many iterations" warning.

Edit your 'Along' Pattern Features and change the 'Pattern Method' (at the bottom of the Pattern Feature dialog) from Variational to Simple, and then recreate the Deformable Part feature. See if that helps. I had no problem deforming the part in an assembly once this was edited (attached).